Blanket-holding attachment.



M. ROGK STROH. BLANKET HOLDING ATTACHMENT. APPLICATION mum MAR. 11,1906.

899,326. Patented Sept. 22', 1908.

THE RORRTS' PF. rznswa, WASHINGTON, Ix

MAX ROOKSTROH, OF KLEIN-SEDLITZ, NEAR PIRNA, GERMANYI BLANKE T-HOLDINGATTACI-DVEENT.

Specification of Letters Patent.

Patented Sept. 22, 1908.

Application filed March 11, 1908. Serial No. 420,514.

To all whom it may concern.

Be it known that 1, MAX RooKsTRoH, director, citizen of the Kingdom ofSaxony, residing at Klein-Sedlitz, near Pirna-on-theElbe, Villa Liitzow,Germany, have invented certain new and useful Improvements inBlanket-Holding Attachments, of which the following is a specification.

This invention relates to new and useful improvements in blanket holdingattachments for platens and. more particularly to an improvement in thenature of a tightening frame for said blanket.

This invention relates to a device for holding in position the overlayupon the face of the platen, especially at the upper tightening frame.This frame consists, as is well-known, of a cross-bar supported bypivotally mounted arms, which after the overlay has been placed inposition and drawn tight rests on the upper projecting edge of theoverlay and, under the action of a spring presses the same into asemi-circular groove in the platen and thus keeps it tightly stretched.

The arms which support the bar have.

hitherto usually been pivoted to the sides of the platen close to itssurface and have been liable to bend over in the forward direction insuch manner as to come between the platen and the bed plates and thus tocause damage.

Now this invention obviates the aforesaid difficulty by placing thefulcrum of the upper tightening frame so far to the rear of the platensurface that when the frame is turned down its cross-bar falls to therear of the platen.

In the accompanying drawings Figure 1 shows a platen in side view withthe upper tightening frame folded back, Fig. 2 is a view of the uppertightening frame in the working position and Fig. 3 is a plan view ofFig. 2.

The clamping bar a is carried by lateral arms 0 which are provided withslots and are rotatable around pins 1) arranged at the side of theplaten, the pins I) being located so far to the rear of the edge of theplaten as to prevent the frame, when folded forward, from projectingover the upper edge of the platen. In order to bring the frame into theworking position, it is ulled up as shown in Fig. 2, so that the pinsffare brought to the lower ends of the slots in the lateral arms 0 andthat the bar .a can pass easily over the clamping springs, whereupon theframe is pushed down, bringing the pins 6 to the upper ends of theirslots and the bar a beneath the spring.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is:

In combination, a platen body, a blanket holding frame therefor,comprising a cross bar and slotted arms carried at the ends of saidcross bar, ivot pins carried by said body and engaged fhrough the slotsof the said arms, said body having a face formed with a transversegroove to receive said cross bar and springs projecting over said grooveto confine said cross bar therein, said arms being pivotally andslidably movable with relation to said pins.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

MAX ROCKSTROH. Witnesses:

PAUL ARRAs, CLARE SIMON.

